A deep depression in the Bay of Bengal is likely to amplify into a cyclone, threatening Tamil Nadu. The Indian Coast Guard and state agencies are ensuring seafarers' safety, while the IMD predicts heavy rainfalls prompting school closures and exam postponements.

According to the IMD, the depression is very likely to continue to move north-northwestwards and intensify further into a cyclonic storm

The Regional Meteorological Centre, Chennai said the depression over southwest Bay of Bengal has now intensified into a deep depression, and that it may intensify further into cyclone Fengal on November 27,

Heavy to very heavy rainfall is likely at a few places with extremely heavy rainfall at isolated places over Tamil Nadu and Puducherry during November 28 to 30

According to a special weather bulletin issued by the Bangladesh Meteorological Department, or BMD, the deep depression was located 2,025km south-southwest of Chattogram seaport, 1,960km south-southwest of Cox’s Bazar seaport, 1,940km south-southwest of Mongla seaport, and 1,925km south-southwest of Payra seaport on Tuesday afternoon.

IMD forecasts monsoon depression near Tamil Nadu coast, bringing heavy rain; potential cyclone formation, track influenced by western disturbance.

Rain lashed parts of Tamil Nadu’s Nagapattinam as deep depression forms over southwest Bay of Bengal on November 27. District administration announced holiday for schools and colleges in several regions in view of continuous rainfall.

IMD issued an alert regarding a depression over Southwest Bay of Bengal, which is expected to intensify into a deep depression within the next 12 hours.

If the deep depression intensifies into a cyclone, it will be named as Fengal, according to the rules of the World Meteorological Organisation (WMO) on naming cyclones.

With northeast monsoon season's first cyclone likely to form over the Bay of Bengal on Wednesday, IMD has upgraded its rain alert for Chennai.